Bracing apparatus
The invention relates to a hydraulic bracing apparatus (1) for conveying and/or winning units in underground winning operations. Tightening cylinders (7) with axes inclined towards one another are connected between the support assemblies (3, 3') and the conveyor (2). The operation of the bracin...
Saved in:
Main Author | |
---|---|
Format | Patent |
Language | English German |
Published |
24.11.1988
|
Edition | 4 |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The invention relates to a hydraulic bracing apparatus (1) for conveying and/or winning units in underground winning operations. Tightening cylinders (7) with axes inclined towards one another are connected between the support assemblies (3, 3') and the conveyor (2). The operation of the bracing apparatus (1) is effected via a 4/4-way directional control valve (19) as well as a downstream 3/2-way directional control valve (16). According to the invention, the piston space (12) of a tightening cylinder (7) designed as pressure cylinder (10) and the annular space (13) of a tightening cylinder (7) designed as pull cylinder (11) are connected via a hydraulic line (14) (Figure 2). |
---|---|
Bibliography: | Application Number: DE19873715781 |